HAR Viewer

Inspect request methods, statuses, resource types, timings, transfer sizes, caching and compression in a browser-generated HAR 1.2 file.

Choose an uncompressed .har or .json file up to 1 GB. HAR files can contain active session secrets; upload only files you are authorized to process.

Safety and interpretation limits

Convertr validates and reads the uploaded JSON only. It never fetches or replays a recorded URL, resolves DNS, executes scripts, renders response bodies, creates cURL commands, or acts as a network proxy.

Browser timing fields can be missing, negative, cached, connection-reused, or vendor-specific. Summaries preserve those semantics and exclude unavailable phases from averages.

HAR Viewer

Inspect HTTP Archive requests, statuses, timings, sizes, caching, and compression without replaying recorded traffic.

Input
One valid .har file.
Output
A filtered request table and aggregate diagnostics.
Real limitations
The viewer does not fetch recorded URLs, reproduce a browser session, or prove the root cause of a performance problem.
Privacy and data handling
one valid .har file is uploaded to a compatible Convertr worker only after you start the operation. Processing is automated, and temporary source and result files are deleted automatically after processing rather than retained as permanent storage.

How to use this tool

  1. Choose one valid .har file and wait for the page to validate it.
  2. Set the available output or inspection options, then start processing.
  3. Review the reported result and download a filtered request table and aggregate diagnostics before the temporary link expires.

Common failure modes

Invalid HAR JSON, missing required log fields, unsafe extensions, or a file over its configured limits is rejected.

Useful example

Open checkout.har and filter 404 responses to find failed assets without contacting the captured hosts.